My iphone 5c has phoned out and sent messages on its own whilst on charge. This has happened on three separate occasions. After the second time I had my phone fully checked for any hardware problems and it was reset but the problem has happened agai

Hi,

Thank you for your response - no the phone was not in my pocket it was on a shelf charging, on its own!.. Not sure what jailbroken means but it has not been tampered with to my knowledge, I believe it is still locked to my network provider EE. I am not sure how many texts it sent this time around but it appears to have called two of my contacts - I am trying to find out from them what it has sent/done. On the previous time that this happened the phone actually accessed my photos and sent one out to one of my contacts - it did this on its own - the first thing I knew about it was when the person texted me back and asked why I had sent it. I feel that I can't trust the phone at the moment. I have owned the phone from new and it is approx. 18months old. I have used it to teather to my PC, ipad and my son's android phone when the wifi and phone lines were down (we live in a very rural area). Could I have picked up a bug? It has only recently been analysed by an apple store who ran a full diagnostic check and they reset the whole phone for me as a precaution as the check gave the phone a full bill of health. I have spoken to apple support and they have suggested that I change my apple id password which I have done but I am terrified that the phone will go AWOL again as I am not convinced that this is necessary the answer!